/*
 * fluorescence is a free, customizable Ultima Online client.
 * Copyright (C) 2011-2012, http://fluorescence-client.org

 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


#ifndef FLUO_UI_PARTICLES_EMITTER_HPP
#define FLUO_UI_PARTICLES_EMITTER_HPP

#include <boost/shared_ptr.hpp>
#include <ClanLib/Display/Render/graphic_context.h>
class CL_ProgramObject;

#include <misc/string.hpp>
#include <misc/interpolation.hpp>

namespace fluo {
namespace ui {
namespace particles {

class StartLocationProvider;
class MotionModel;

class Emitter {
public:
    Emitter();

    virtual void step(float elapsedSeconds) = 0;
    virtual void render(CL_GraphicContext& gc, boost::shared_ptr<CL_ProgramObject>& shader) = 0;
    
    virtual bool isExpired() const = 0;
    virtual bool isEmitting() const = 0;
    
    virtual void onEvent(const UnicodeString& event) = 0;
    
    void setLocation(const CL_Vec3f& location);
    void setLocationOffset(const CL_Vec3f& offset);
    
    CL_Vec3f getLocation() const;
    CL_Vec3f getStartLocation() const;

protected:
    CL_Vec3f startLocation_;
    CL_Vec3f location_;
    CL_Vec3f locationOffset_;

    float age_;
    float emittedFractionStore_;

    bool emittedMoveWithEmitter_;
};

}
}
}

#endif
